Reversing-switch



B. STECHBAHT.

HEVERSING SWITCH. APPLICATION FILED MAY 12, 1919. RENEwED 1AN222, 1921.

1,399,411 n Patented Deo. 6, 1921.

Ewen/fo?" l Brun/0 @Ze/@Marzi Y nisms, and has for its object UNITE-D STATES lra'nzrr. orifice.

BRUNO sTEcIIBAIvI, or cHIoAGo, ILLINOIS.

REVERSING-SWITCH.

i 1 ,399,41'1, Spe'cicaton of Application led May 12,. 1919, Serial No. 296,368.

snap type of a; simple and effective structural formation 'and association of parts, and where with thestarting, stopping and reversing of amotor can be readily effected, all as will hereinafter more fully appear.

' -'n theV accompanying drawing Figure l is a plan view of the present reversing mechanism, with the operating shaft or vhandle shown in section.

Figs.vv 2 and 3 arev companion 'en d'elevations from oppositev ends of the mechanism,

and illustrating the connections, etc.,;of. the

thecircuit vinlet end ofthe mechanism.

` 'of flxedcontact -members of the 'circuit outvided withtheusual operating' knob or. hanf fixed contact members.

F 4 is a detailsectional elevation on line 4 4, Figs.' Y Y' .'Fig. isl a longitudinal section'on line 5 5, Fig. 1. A f Fig. 6 is a vdetached p erspective .view 'ofone ofthe pair of vfixed-'contact members-of Fig. 7 is a similar viewof one of thepair let end of the mechanism. Like reference numerals indicate-like parts in the several views. Y

Referring tothe dra v vi'ng,` A1 l designates a main supporting' base, usuallyriof the' plate form shown,fandupon which the different elements of the mechanism. are mounted.

- 2- designates the' jcent'rally arranged operating rock shaft ofthe mechanism, -prodle 3 and journaled at its. lowerle'nd in the base plate 1 and' intermediateitsle'ngtli in 'a'. st'tionary bridge plate' 4 now. tojfbe de- 4. 'designates the plate ferred to and which is supported in. spaced relation to the-base 1 b'yapair of end posts shown. The bridge plate is formed' with said recess.

Yl'de'signates' a pinor stud Yon the crank Q5- Letters Patent.

Renewed January 22, 1921.- serii No.' 439,318.

a central journal orifice for therock shaft -2 aforesaid, with an upturned centrally arranged marginal stop lug 6, with a marginal recess r in opposed relation to said stop lu'g` 6, and with longitudinally disposed guide l shown more particularly in F ig. 1.

' 9 designates a combined operating. and locking plate xedly secured to the operating shaft 2, .anddisposed outside the'bridge plate 4 and in adjacentrelation thereto. The

plate 9 is provided with a centrally arranged crank stud or lug Y10 adapted foroperative' `engagement with the hereinafter described kvPatented D ec.i 6, 1921*. 'l

AVslots. 8 Vat the sidesof its journal orifice, as

snap or operatingV spring 1 9, and with a pair- I of circularly spaced Varms 11 in equidistant angularrelation tothe crank stud 10. Said arms 11 are adapted to contact with the stop lug'6 of the bridge plate 4' to limit the ,rocking movement of the plate 9 in actual use, and said arms' are provided with inturned marginalflanges '1 2 for intermittent holding engagement with the hereinafter de scribed sliding plate A16 associated with the -movable contact members of the mechanism.

^ 13 .designates a crank disk fixedly associated with the movable' contact members of the switch mechanism, andv provided with a crank stud or lug r14 arranged inadj acent -relation'to thestnd or lug l() ofthe plate 9- for operative engagement' iwith the spring 19 hereinafter described' and'halving enga'gement-in themarginal recess 7 ofthe i-Xed bridge plate 4, -so as to vbe'restricted in its rocking movement by the'end Vshouldersof l disk 13 having operative engagement-with v thevv hereinafteradescribed radial slotY of a sliding head lor plate 16,t0'cause the sliding i l head and crank-disk 13 to have movement '1 n` unison. Y

' designates asliding head or plate arranged betweenthe crank4 disk 13' andthe bridgezplate '4 andghaving out-turned lugs 17 for guidingengagement with the guide Slots 48 of' said bridge plate and confined thereby to movement in a rectilinear path.

said so as to have a path in line with the .-1ntur'n'ed ian'ges'lQ of'theYrocking plate The'ends of thelugs 17 project 'through 9 for intermittent holding engagement therei .with asV set forth in the operation of the mechanism".

18 designates a 'radialfslot'in' the plate'or 'iooV head 16 for'op'erative engagement with the' .crankpin'lof the crank disk 13 aforesaid.

19 designates the heretofore referred to snap or operating spring, having operative engagement with the stud or lug 10 of the operating plate 9 andwith the correspondingstud or lug 14 of the crank disk 13, with a resilient tendency to return and maintain said studs in a radially alined condition. In the preferred form of the spring 19 the same comprises a circularly coiled body p0rtionadapted to loosely encircle the operating shaft 2 of the mechanism, and a pair of crossed fingers or extensions 20 which straddle or embrace the studs or lugs 10- and 14 to resiliently hold the same in the described radial alinement. A

,21 and 22 designate the respective inlet and outlet terminal posts or piles of the switch mechanism fixedly attached to the base 1 at opposite sides of vthe mechanisms and parts above described. In the preferredy construction shown in the drawing, each post or pile 21, 22, will consist of alternate strips of insulating material and a pair of metal strips 23, 24v or 25, 26 with each strip formed with a terminal ear for its individual connection in the circuit, and with duplicate. contact ears or lugs arranged in spaced relation and projecting into the path of a. movable contact member of the mechanism. In the .present improvement one pair of strips 23, 24 will have a parallel relation -toeach other as shown in Fig. 2, while the other pair of strips 25, 26 will have a crossed `relation to each other. as shown in Fig. 3,

the object being to preserve the sition of the positive and negative terminal points of the switch in line with eachother.

27 and 28 designate the pair of movable contact members of the mechanism, secured together at their middle portion and to the aforesaid crank disk 13, through interposed disks of insulating material, and having pivotal relation with the operating shaft 2 without electrical connection therewith. In the preferred construction each movable contact member 27, 28 will consist of a pair of spring bars the outer ends of which have a flared formation and adapted to slide with' yielding friction upon opposite sides of the aforesaid contact ears or lugs of the fixed contact members of the mechanism with a view to preserve effective electrical contact during continued use.

The operation of the mechanism is as follows:

Assuming the parts to be in the circuit in-A terrupted conditlon shown in Fig. 1, with the crank disk 13 held from a rocking movement in either direction by the engagement of the lugs 17 of its associated sliding pla-te 16 against the inner faces of the holding flanges 12 of the operating plate 9. l In a manipulationl of the parts to the left to establish thecircuit on a motor or the .like and attain Va forward drive of the same,

of the right hand flange 12 of the operat- 'p ing plate 9, and said sliding plate 16 is held from movement to the right, with the stud or lug 14 o-f the associated crank disk 13 forming a stationary abutment for one of the fingers 20 of the spring member 19.

Said holding movement prevails until a turning movement o f the plate`9 to the left carries its right hand fiange 12 outof thev path of the aforesaid right hand lug 17 to release the same and permit a sliding movement of the plate 16 to the right, and a turning movement to the left of the crank disk 13 and the associated movable contact members 27, 28 into electrical contact with the right hand fixed contact members 23, 24, and left hand fixed contact members 25, 26, to complete the circuit and effect a forward drive of an electric motor or the like. In this and the other manipulations of mechanism hereinafter set for the movement of the plate 16 and associated parts takes place right, brings its right hand holding flange 12 into holding engagement with the inner face of the right hand lug 17 of the sliding plate 16, to hold the same andits associated parts from movement and in a locked condition until in the continued turning movement to the right of the plate 9 its right hand holding flange 12 moves out of the path of the aforesaid right hand lug 17 to release the same and permit a sliding movement of t-he plate 16 to the left, and a turning movement to the right of the parts operatively associated with the plates 9 and '16 to effect a ybreak in the electric circuit.

In a manipulation of the parts to attain a reversa-l in the :directionof the current to a motor or the like, the turning movement of the plate 9 to the right continued, and an initial movement of said plate. 9 brings its left hand holding Hange 12 into holding movable contact-.members 27, 28 into electrica-l contact with the left hand fixed contact members 23,. 24 and right hand Xed contact members 25, 26 to complete thelelcctrical circuit and attain a reverse drive of an electric motor or the like.

In the present switch mechanism, the Acoacting lugs 17 of the sliding plate 16 and holding lugs 12 of the operating .plate'9 con- .ne the parts to a predetermined degree of rocking motion in actual use. It ispref-V erable howeverv to provide separate means for attaining in a more substantial manner such restriction of movement, to wit: the

.marginal recess 7 and marginal stop lug 6 heretofore described.

Having thus fully described my said invention what Iclaini as new and desireto' secure by Letters Patent, is

1. In a reversing switch, the combination of an operating plate, means for imparting insulated from each other, pairs of fixed, contact members individual to the rocking a rocking movement to said plate, a pair of rocking contact arms moving in unison and insulated from each other, pairs of fixed.l

ining said sliding head to movement in a. rectilinear path, means between said sliding plate and the operating plate for locking said sliding plate at each end of its path and at the middle of said path, and a spring as.-

sociated vwith said rocking'contact arms and the operating plate for imparting a snapl movement to said arms when vthe sliding plateJ is released from either of the aforesaid holding engagements, with the operating plate, substantially as set forth.

2. In a reversing switch, the combinationv A of an operating plate, means for imparting a rockin movement'to said plate, a pair of rocking contact arms moving in unison yand contact arms aforesaid, and an operative connection between D said rocking .contact arms and the aforesaid operating plat'e,com prising a sliding head operatively connected. to saidrocking contact arms by a crank disk and radial slot connection, `means for 0011-.

lining saidsliding: head to movement in a rectilinear path, meansbetweensaid Vsliding plate and the operating plate for locking said sliding plate ateach end of its path and at 'the' middle of said path,and a spring associated with said rocking contact alrms` l l i plate the. operating vplate for 'locking said sliding plate .at 'each ,end of its 'path-` and the operating plate for imparting a snap movement to said arms when the slid ing. plate is released from either of theafore- 'said holding. engagements with the operating plate, substantially as'set` forth.

3. In a reversing switch, the combination of an'operatingplate,means for imparting a rocking-movenient` to said plate, a pair of rockingcontact arms moving in unison and insulata from each other, pairs ofv fixed contact members individual to the rocking contact. arms aforesaid, and an op erative connection between .said rocking contact arms and the aforesaid. operating plate, comprising a sliding head operatively connected` to said rocking contact arms, means between said sliding plate andthe operating plate lfor locking said sliding plate at each end of its path and .at the middle of said path, the same comprising marginal flanges on the operating plate and lugson the sliding plate adapted for intermittent engagement with said marginal flanges, and a spring associated with said rocking contact arms and the operating plate for imparting a snap movement to said arms when the sliding plate is released from either of .the aforesaid holding engagements with the operating plate, substantially as set forth.- 4. In a reversing switch, the combination of an operating plate, means for imparting a rocking movement to said plate, a pfair of rocking contact arms moving in unison and insulated from each other, pairs of fixed contact memb'ers individual to therocking contact arms aforesaid, and an operative connection between said rrockingcontact arms andthe aforesaid operating plate, comf prising a sliding head operatively connected to said rocking contact arms, means for conlining said sliding-head to movementin a rectilinear path, means between said sliding plate and the operating plate for locking said sliding plate` at each end of its path andat the middle of said path, a crank pin or lug associated withVv the rocking contact ing plate, and a spfrin- Ihaving arms or extensions s'traddling s aad pins vand tending switch, the combination of an operating p ate, means lfor imparting aV rocking movement vtosaid plate, a'pair of rockingcontact'arms v moving in unison and. 'insulated from each other, pairs of fixedY contact members individual to the rocking,

contact arms 'aforesaid", @and .an operative connection'between' rocking `contact `arms and the aforesaid operating plate, comprising a'sliding headoperatively connected' 120l to said rocking contact armsfby a'crank disk and radial slot connection, means for coniining saidslidin-g tomovem'ent in 'a rectilinear-path, means-'between said sliding and at themiddle of said patina crankpin or lug associated vwith .the Contact arms, a companion pin or lug on the operat- 105 arms, a companion pin or lug-on the operattensions straddling alinement, substantially as set forth.

6. In a reversing switch, the combination *of an operating plate, means for imparting a rocking movement, to said plate, a,- pair of rocking contact arms moving in unison and insulated from each other, pairs-of fixed contact members individual to the rocking contact arms aforesaid, and an operative connection between said rocking contact 4arms and the aforesaid operating plate, comprising a sliding head operatively connected to said rocking contact arms, means between said sliding plate and the operating plate for locking saidsliding plate at each end of its path and at the'middle ofsaid path,

the same comprising marginal' anges on the operating plate and lugs on the sliding plate adapted for intermittent engagement with said marginal flanges, a crank pin or lug on the crank disk aforesaid, a companion pin or lug on the operating plate, and :a spring havingxarms or extensions straddling said pins and tending to maintain the same in radial alinement, substant tially as set forth.

7. In a reversing switch, the combination of an operating plate, means for imparting a rocking movement to said plate, a vpair rocking contact armsand operating plate aforesaid, comprising asliding head operatively connected t`o said rocking contact the middle of said path, and a spring associated with rocking contact arms and the operating plate for imparting a snap movement to sadvarms when the sliding .plate is released from either of the aforesaid holding engagements with the operating plate, substantially as set forth.

8. In a reversing switch, the combination of an operating plate, means for imparting a rocking movement to said plate, a pair of rocking contact arms moving in unison and insulated from eachother, vpairs of fixed contact members individual to the rocking contact arms aforesaid, one pair of said lixed contact members havingparallel reing plate at each end of its path and at lation to each other and the other pair of said members a crossed relation to each other, an operating connection between thev rocking Contact arms and the operating plate aforesaid, comprising a sliding head operatively connected to said rocking contact arms by a crank disk and radial slot connection, means between said sliding plate 'and the operating plate for locking said sliding plate at each end of its path and at the middle of said path, and a spring associated with said rocking contact arms and the operating plate for imparting a snap movement to said arms when the sliding 'plate is "released from either of the afore- 'said holding engagements with the operating plate, substantially as set forth.

Signed at Chicago, Illinois, this 30th day of April, 1919. f

. Y BRUNO STECI-IBART. 

